Install Codex skills into $CODEX_HOME/skills from a curated list or a GitHub repo path. Use when a user asks to list installable skills, install a curated skill, or install a skill from another repo (including private repos).
This skill does not declare a tool allowlist. The agent host applies whatever default tools are available at runtime.
SKILL.md / Manifest
https://raw.githubusercontent.com/openai/codex/main/codex-rs/skills/src/assets/samples/skill-installer/SKILL.mdRegistry
github (via claudemarketplaces.com)